Hi Kiko. I'll go to Riviera Maya next August with my friends, and of course I will bring my surf board with me. I think I will rent a car and go to Ixtapa, in the Guerrero state, about 1500km from playa del carmen. It will cost about 400 USD for three days with HERTZ or AVIS. Be aware with the police. They are all corrupted and you must pay them for any foolish thing.